module.exports =function game(playerAction) {
    var random = Math.random()*3
if(random < 1){
    var computerAction = 'rock'

} else if(random >2) {
    var computerAction = 'scissor'
} else {
    var computerAction = 'paper'
}

    console.log('我出了' + computerAction);

    // bijiao

if(computerAction === playerAction) {
    console.log('平局');
    return 0
} else if((computerAction === 'rock' && playerAction ==='paper')||(computerAction ==='scissor' && playerAction ==='rock')||(computerAction === 'paper' &&playerAction =='scissor'))
{
    console.log('你赢了');
    return -1
} else {
    console.log('你输了');
    return 1
}
}